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https://irlib.pccu.edu.tw/handle/987654321/20896
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| 題名: | Electrical enhancement of DMFC by Pt-M/C catalyst-assisted PVD |
| 作者: | Yao, KS (Yao, Kuo-Shan)
Chen, YC (Chen, Ya-Chi)
Chao, CH (Chao, Ching-Hsun)
Wang, WF (Wang, Wei-Fan)
Lien, SY (Lien, Shui-Yang)
Shih, HC (Shih, Han Chang)
Chen, TL (Chen, Tien-Lai)
Weng, KW (Weng, Ko-Wei) |
| 貢獻者: | 化材系 |
| 關鍵詞: | OXYGEN REDUCTION
METHANOL
ORR |
| 日期: | 2010-10 |
| 上傳時間: | 2011-12-09 10:13:18 (UTC+8) |
| 摘要: | Direct methanol fuel cells (DMFC) are studied extensively owing to their simple cell configuration, high volume energy density, short start-up time and operation reliability. However, the major drawbacks include high production cost, catalyst and methanol crossover poisoning. This study presents a simple method for Pt-M/C catalyst preparation using a magnetron sputtering (MS) and metal-plasma ion implantation (MPII) technique. The Pt catalysts were sputtered onto a gas diffusion layer (GDL), followed by implanting Cr, Fe, Ni, and Mo catalysts using MPII (accelerating voltage is 20 kV and implantation fluence is 1 x 10(16) ions/cm(2)). The crystallinity and microstructure of the catalyst films were analyzed using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), scanning electronic microscopy (SEM) and transmission electronic microscopy (TEM). The cell performance was tested using potential stat/galvano station. The results indicate that the membrane electrode assembly for Pt-Ni/C, Pt-Fe/C and Pt-Cr/C catalysts can enhance DMFC cell performance, compared with traditional Pt/C and Pt-Ru/C. The maximum Pt-Ni/C power density is 2.4 mW/cm(2) with an open circuit voltage (OCV) 0.334 V when tested at a methanol concentration of 1 M. (C) 2010 Elsevier B.V. All rights reserved. |
| 顯示於類別: | [化學工程與材料工程學系暨碩士班] 期刊論文
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